Rigidized refractory fibrous ceramic insulation

Details Rigidized refractory fibrous ceramic insulation Rigidized refractory fibrous ceramic insulation

1995-05-12

1997-04-29

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Of inorganic materials

264 82, 264 86, 264136, 264137, 264345, 427246, 427343, 4273722, 501 12, 501 95, B29C 6720, B29C 4116

Patent

active

056246137

ABSTRACT:
A slurry is molded from ceramic fibers and/or microparticles to form a soft felt mat which is impregnated with a sol prior to drying the mat. A catalyst for the sol is caused to diffuse into the mat by exposing the mat to the catalyst and subjecting the mat to a soak time during which the catalyst diffuses into the mat and causes the sol to gel. The sol-gel binder forms bonds so that the mat is dimensionally stabilized. The mat is dried to produce ceramic insulation, ceramic insulation having a consistent microstructure and a fully gelled sol-gel binder through its entire thickness.

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